A vein collection device and a vein collection identification method

Abstract

The present application discloses a vein collection device and a vein collection and identification method. The vein collection device includes a base, a finger rest, an infrared light source, a first bracket, and a second bracket. The finger rest can slide along the base. The infrared light source is used to emit infrared light toward the plane on which the finger rest slides. The first end of the first bracket is hinged to a fixing member provided on the base. The first end of the second bracket is hinged to the second end of the first bracket. The second end of the second bracket is hinged to the finger rest. When the finger rest slides toward the fixing member, it can drive the second bracket to fold toward the first bracket. When the second bracket is folded toward the first bracket, the camera collects the vein image of the finger placed on the finger rest. The vein collection device and vein collection and identification method of the present application enable the second bracket to fold toward the first bracket to stand up when the finger rest slides toward the fixing member, thereby facilitating the camera to collect the vein image of the finger, and can reduce the thickness of the vein collection device, which is conducive to the thinning of the product.

Description

Technical Field

[0001] The present application relates to the field of biometric identification technology, and in particular to a vein collection device and a vein collection and identification method. Background Art

[0002] In the related art, in finger vein collection devices, cameras and light sources are often arranged in a contralateral manner inside the cavity of the collection device, and a finger needs to be accommodated between the camera and the light source to collect the veins of the finger. This makes the thickness of the final collection device often large, occupies a large space, and cannot be applied to some usage scenarios that require thinness. Summary of the invention

[0003] The purpose of the present application is to provide a vein collection device and a vein collection identification method to solve the technical problems existing in the prior art: the thickness of the vein collection device is often relatively large and occupies a large space.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions:

[0005] The embodiment of the present application provides a vein collection device. The vein collection device includes: a base; a finger rest, which is arranged on the base and can slide along the base; an infrared light source, which is arranged on the base and is used to emit infrared light toward the plane on which the finger rest slides; a first bracket, the first end of which is hinged to a fixing member arranged on the base; a second bracket, the first end of which is hinged to the second end of the first bracket, the second end of which is hinged to the finger rest, and when the finger rest slides toward the fixing member, it can drive the second bracket to fold toward the first bracket; a camera, which is arranged on the second bracket, and when the second bracket is folded toward the first bracket, the camera collects a vein image of the finger placed on the finger rest.

[0006] In some embodiments, the first end of the first bracket is connected to the fixing member via a first rotating shaft. The first end of the second bracket is connected to the second end of the first bracket via a second rotating shaft. The second end of the second bracket is connected to the finger rest via a third rotating shaft. The first rotating shaft, the second rotating shaft and the third rotating shaft are arranged in parallel in pairs.

[0007] In certain embodiments, applying an external force to the finger rest to slide the finger rest can switch the vein collection device between a flat state and an upright state. When the finger rest is in an initial position, the vein collection device is in the flat state. The flat state is a state in which the first bracket and the second bracket are close to the base. When the finger rest is between the initial position and the fixing member, the vein collection device is in the upright state. The upright state is a state in which the second bracket is folded toward the first bracket so that the first bracket and the second bracket are upright relative to the base.

[0008] In some embodiments, a first spring is disposed on the first rotating shaft, and a second spring is disposed on the second rotating shaft. When the vein collection device is in the flat state, the first spring and the second spring are both in a natural state; when the vein collection device is in the upright state, the first spring and the second spring are both in an energy storage state; when the vein collection device is in the upright state and the first spring and the second spring are in an energy storage state, if the external force disappears, the vein collection device is restored from the upright state to the flat state under the action of the spring force.

[0009] In some embodiments, a guide rail is provided on the base, the finger rest is embedded in the guide rail to slide along the guide rail, and the guide rail limits the movement of the finger rest in the thickness direction of the base.

[0010] In some embodiments, the vein collection device further comprises a limiting device, which is arranged on the base and is used to limit the sliding travel of the finger rest along the guide rail.

[0011] In some embodiments, the limiting device is a limiting block. The limiting block, the first bracket, and the second bracket are arranged on the same surface of the base, and the limiting block protrudes from the surface of the base. When the vein collection device is in the flat state, the limiting block conflicts with the first bracket or the second rotating shaft.

[0012] In certain embodiments, the vein collection device further includes: a touch sensor, disposed on the base and between the limiting device and the infrared light source, the touch sensor being used to sense the position of the finger rest; and a processor, the processor being used to control the infrared light source to turn on and control the camera to take one or more photos to obtain the vein image when the touch sensor senses that the finger rest is located at a preset position.

[0013] In some embodiments, the camera is an infrared camera or a visible light camera provided with an infrared filter.

[0014] The present application also provides a vein collection and identification method, which is applicable to the vein collection device described in any of the above embodiments. The vein collection and identification method includes:

[0015] Get the touch sensor status;

[0016] When the touch sensor is in a sensing state, turning on the infrared light source and controlling the camera to take one or more vein images, wherein the sensing state is triggered when the touch sensor senses that the finger rest is located at a preset position;

[0017] The feature data of the vein image is extracted to store the feature data in a database or the feature data is matched with the feature data in a database and a matching result is output.

[0018] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0019] The vein collection device and vein collection and identification method of the embodiment of the present application are provided with a finger rest, a second bracket hinged to the finger rest, and a first bracket hinged to the second bracket, so that when the finger rest slides on the base toward the fixing part of the base, the second bracket can be folded toward the first bracket, so that when the finger rest slides toward the fixing part, the second bracket can stand up, so that the camera arranged on the second bracket can have a certain height and the camera and the infrared light source are arranged opposite to each other with the finger rest in between, so that it is convenient for the camera to collect the vein image of the finger placed on the finger rest, and after the camera finishes collecting the vein image, the finger rest can slide back to the original position, and the folding height of the first bracket and the second bracket can be released, so that the thickness of the vein collection device can be reduced, so that the vein collection device is easy to store and occupies less space, which is conducive to the thinning of the product and related application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of a vein collection device in a certain embodiment of the present application in a flat state;

[0022] Figure 2 for Figure 1 A schematic cross-sectional view of a vein collection device taken along line II-II;

[0023] Figure 3 This is a schematic structural diagram of a vein collection device in a certain embodiment of the present application in an upright state;

[0024] Figure 4 This is a flow chart of a vein collection and identification method according to a certain embodiment of the present application;

[0025] Figure 5 A schematic diagram of extracting feature data of a vein image in a certain embodiment of the present application.

[0026] The following are the descriptions of the reference numerals:

[0027] 100. Vein collection device;

[0028] 10. Base;

[0029] 101. Fixing parts;

[0030] 102. Guide rail;

[0031] 103. Limiting device;

[0032] 20. Finger support;

[0033] 201, initial position;

[0034] 202. Preset position;

[0035] 30. Infrared light source;

[0036] 40. The first bracket;

[0037] 401, a first end of a first bracket;

[0038] 402, a second end of the first bracket;

[0039] 50. Second bracket;

[0040] 501, a first end of a second bracket;

[0041] 502, a second end of a second bracket;

[0042] 60. Camera;

[0043] 70. First rotating shaft;

[0044] 71. First spring;

[0045] 80. Second rotating shaft;

[0046] 81, second spring;

[0047] 90. The third rotating shaft;

[0048] 91, third spring;

[0049] 110. Touch sensor. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] The embodiment of the present application provides a vein collection device 100. The vein collection device 100 includes: a base 10; a finger rest 20, which is arranged on the base 10 and can slide along the base 10; an infrared light source 30, which is arranged on the base 10 and is used to emit infrared light toward the plane on which the finger rest 20 slides; a first bracket 40, wherein a first end 401 of the first bracket 40 is hinged to a fixing member 101 arranged on the base 10; a second bracket 50, wherein a first end 501 of the second bracket 50 is hinged to a second end 402 of the first bracket 40, and a second end 502 of the second bracket 50 is hinged to the finger rest 20, and when the finger rest 20 slides toward the fixing member 101, it can drive the second bracket 50 to fold toward the first bracket 40; and a camera 60, which is arranged on the second bracket 50, and when the second bracket 50 is folded toward the first bracket 40, the camera 60 collects a vein image of a finger placed on the finger rest 20.

[0055] The vein collection device 100 and the vein collection and identification method of the embodiment of the present application are provided with a finger rest 20, a second bracket 50 hinged to the finger rest 20, and a first bracket 40 hinged to the second bracket 50, so that when the finger rest 20 slides on the base 10 toward the fixing member 101 of the base 10, the second bracket 50 can be folded toward the first bracket 40, so that when the finger rest 20 slides toward the fixing member 101, the second bracket 50 can stand up, so that the camera 60 arranged on the second bracket 50 can have a certain height and the camera 60 and the infrared light source 30 are arranged opposite to each other across the finger rest 20, so that it is convenient for the camera to collect the vein image of the finger placed on the finger rest, and after the camera finishes collecting the vein image, the finger rest can slide back to the original position, and the folding height of the first bracket and the second bracket can be released, so that the thickness of the vein collection device can be reduced, so that the vein collection device is easy to store and occupies less space, which is conducive to the thinning of the product and related application scenarios.

[0056] Further description will be given below in conjunction with the accompanying drawings.

[0057] See also Figure 1 and Figure 2 The vein collection device 100 includes a base 10, a finger rest 20, an infrared light source 30, a first bracket 40, a second bracket 50 and a camera 60.

[0058] The base 10 may be a square plate-shaped base 10 for supporting and connecting components of the vein collection device 100 .

[0059] The finger rest 20 is disposed on the base 10, and the finger rest 20 can slide along the base 10. In some specific embodiments, a guide rail 102 is disposed on the base 10, and the finger rest 20 can be embedded in the guide rail 102 to slide along the guide rail 102, so that the finger rest 20 can slide smoothly. In a specific example, the sliding direction of the finger rest can be Figure 2 and Figure 3 The guide rail 102 limits the movement of the finger rest 20 in the thickness direction of the base 10. Specifically, the thickness direction is Figure 2 and Figure 3 The X direction is shown. The thickness direction of the base 10 is perpendicular to the Y direction in which the finger rest 20 slides along the guide rail 102. The guide rail 102 limits the movement of the finger rest 20 in the thickness direction of the base 10, so that the finger rest can slide perpendicular to the thickness direction of the base 10, thereby driving the second bracket and the first bracket to stand up and restore flatness in the thickness direction of the base, so that the thickness of the vein collection device can be kept thin when the vein collection device is not in use. When the vein collection device is needed, the second bracket and the first bracket are stood up in the thickness direction of the base so that the camera can complete the collection of vein images, which is conducive to the thinness of the product.

[0060] The infrared light source 30 is disposed on the base 10 and is used to emit infrared light toward the plane on which the finger rest 20 slides.

[0061] The first end 401 of the first bracket 40 is hinged to the fixing member 101 provided on the base 10. Specifically, the first end 401 of the first bracket 40 is connected to the fixing member 101 through the first rotating shaft 70.

[0062] The first end 501 of the second bracket 50 is hinged to the second end 402 of the first bracket 40. The second end 502 of the second bracket 50 is hinged to the finger rest 20. Specifically, the first end 501 of the second bracket 50 is connected to the second end 402 of the first bracket 40 via the second rotating shaft 80. The second end 502 of the second bracket 50 is connected to the finger rest 20 via the third rotating shaft 90. The first rotating shaft 70, the second rotating shaft 80 and the third rotating shaft 90 can be arranged in parallel in pairs. When the finger rest 20 slides toward the fixing member 101, it can drive the second bracket 50 to fold toward the first bracket 40.

[0063] The camera 60 is disposed on the second bracket 50. Specifically, the camera 60 can be embedded in the second bracket 50, so that when the finger rest 20 is in the original position, the second bracket 50 can be flat against the base 10, thereby saving the space occupied by the vein collection device 100 when not in use. When the second bracket 50 is folded toward the first bracket 40, the camera 60 collects the vein image of the finger placed on the finger rest 20. The vein image can be a finger vein image. Specifically, as Figure 3 As shown, the vein collection area of ​​the finger vein image can be the area between the first joint and the second joint at the fingertip, which is conducive to obtaining richer vein information, thereby making vein collection and recognition more accurate.

[0064] The camera 60 may be an infrared camera 60 or a visible light camera 60 provided with an infrared filter. The infrared camera 60 is conducive to collecting a clearer vein image. The visible light camera 60 provided with an infrared filter can only transmit infrared light through the infrared filter, thus effectively avoiding interference of ambient light on the imaging of the vein image.

[0065] Applying external force to the finger rest 20 to slide the finger rest 20 can switch the vein collection device 100 between the flat state and the upright state. Figure 2 When the finger rest 20 is in the initial position 201, the vein collection device 100 is in a flat state. The flat state is a state where the first bracket 40 and the second bracket 50 are close to the base 10. Figure 3 When the finger rest 20 is between the initial position 201 and the fixing member 101, the vein collection device 100 is in an erected state. The erected state is a state in which the second bracket 50 is folded toward the first bracket 40 so that the first bracket 40 and the second bracket 50 are erected relative to the base 10. When the vein collection device 100 is in an erected state, the camera disposed on the second bracket can have a certain height and the camera and the infrared light source can be disposed opposite to each other across the finger rest, so that the camera can easily collect the vein image of the finger placed on the finger rest.

[0066] The first rotating shaft 70 is provided with a first spring 71 , and the second rotating shaft 80 is provided with a second spring 81 . In some embodiments, the third rotating shaft 90 is provided with a third spring 91 .

[0067] When the vein collection device 100 is in a flat state, the first spring 71 and the second spring 81 are both in a natural state. When the vein collection device 100 is in a flat state, if an external force pushes the finger rest 20 to slide toward the fixing member 101, the second bracket 50 is folded toward the first bracket 40 to convert the vein collection device 100 into an upright state.

[0068] In some embodiments, when the vein collection device 100 is in an upright state, the first spring 71 and the second spring 81 are both in an energy storage state. In some embodiments, when the vein collection device 100 is in an upright state, the second spring 81 and the third spring 91 are both in an energy storage state. In some embodiments, when the vein collection device 100 is in an upright state, the first spring 71, the second spring 81 and the third spring 91 are all in an energy storage state. When the vein collection device 100 is in an upright state and one or more of the first spring 71, the second spring 81 and the third spring 91 are in an energy storage state, if the external force disappears, the vein collection device 100 is restored from the upright state to the flat state under the action of the spring force. Therefore, when the finger is placed on the finger rest, the finger rest is pushed to slide and the vein image is collected, the finger leaves the finger rest and the external force disappears. At this time, the vein collection device 100 can be restored from the upright state to the flat state under the action of the spring force, so that the folding height of the first bracket and the second bracket can be released, and the thickness of the vein collection device can be restored to a lighter and thinner state in the flat state, so that the vein collection device is easy to store and occupies less space, which is conducive to the thinning of the product and related application scenarios.

[0069] The vein collection device 100 further includes a limiting device 103. The limiting device 103 is disposed on the base 10 and is used to limit the travel of the finger rest 20 sliding along the guide rail 102. The limiting device 103 is a limiting block. The limiting block 103 is disposed on the same surface of the base 10 as the first bracket 40 and the second bracket 50, and the limiting block 103 is disposed protruding from the surface of the base 10. When the vein collection device 100 is in a flat state, the limiting block 103 may conflict with the first bracket 40 or the second rotating shaft 80, thereby making the first bracket 40, the second rotating shaft 80 and the second bracket 50 not completely close to the base 10, but the first bracket 40, the second rotating shaft 80 and the second bracket 50 are in a slightly arched state, with a gap between the first bracket 40, the second rotating shaft 80 and the second bracket 50, which can facilitate the second bracket to smoothly fold toward the first bracket 40 with less resistance when the finger rest 20 slides toward the fixing member 101, so that the vein collection device 100 is in an upright state.

[0070] The vein collecting device 100 may further include a touch sensor 110 and a processor 120 .

[0071] The touch sensor 110 is disposed on the base 10 and between the limit device 103 and the infrared light source 30. The touch sensor 110 is used to sense the position of the finger rest 20. The touch sensor 110 may be a photoelectric coupler or a capacitive touch sensor, etc. When the finger rest 20 slides to the preset position 202 above the touch sensor 110, the touch sensor 110 outputs a sensing signal, and the processor 120 receives the sensing signal and controls the infrared light source 30 to turn on and controls the camera 60 to take one or more photos to obtain a vein image. The preset position 202 may be directly above the touch sensor 110, or when the finger rest 20 just contacts the touch sensor 110. Thus, when the finger pushes the finger rest 20 and slides the finger rest 20 to the preset position 202, the infrared light source 30 may be controlled to turn on and the camera 60 may be controlled to take one or more photos to obtain a vein image, thereby facilitating accurate control of the timing of turning on the light source and collecting the vein image, and facilitating collection of a vein image with a more suitable field of view.

[0072] Furthermore, the preset position 202 may be the position of the finger rest 20 when the finger rest 20 contacts the limit block 103 and the finger rest 20 is located above the touch sensor 110. Figure 3 The figure shows the situation that the finger rest 20 is in the preset position 202. When the finger rest 20 is in the preset position 202, the vein collection device 100 is in an upright state. Figure 3 As shown, the focusing area A of the camera's field of view is exactly the area between the first joint and the second joint at the fingertip, the infrared light source 30 is turned on and the camera 60 is controlled to take one or more photos to obtain a vein image, which is conducive to accurately collecting the finger vein features of the area between the first joint and the second joint at the fingertip.

[0073] See also Figure 4 The vein collection and identification method of the embodiment of the present application is applicable to the vein collection device 100 of any of the above embodiments. The vein collection and identification method includes:

[0074] S01: Acquire the state of the touch sensor 110;

[0075] S02: When the touch sensor 110 is in a sensing state, turn on the infrared light source and control the camera 60 to capture one or more vein images, wherein the sensing state is triggered when the touch sensor 110 senses that the finger rest 20 is located at the preset position 202;

[0076] S03: Extracting feature data of the vein image to store the feature data in a database or matching the feature data with feature data in a database and outputting a matching result.

[0077] Specifically, the state of the touch sensor 110 may include a sensing state and a non-sensing state. The sensing state is triggered when the finger rest 20 is at a preset position 202 above the touch sensor 110. When the touch sensor 110 no longer senses that the finger rest 20 is at the preset position 202 above the touch sensor 110, the touch sensor is in a non-sensing state.

[0078] After controlling the camera 60 to capture one or more vein images, feature data can be extracted from the one or more vein images to store the feature data in a database; or the one or more vein images can be processed to obtain processed vein images, and feature data can be extracted from the processed vein images and then stored in a database to complete the collection of vein features. Furthermore, the feature data can be encrypted and then stored in the database, thereby improving the security of the feature data in the database and preventing the feature data in the database from being stolen or tampered with.

[0079] The process of extracting feature data from vein images can be as follows Figure 5 As shown, the collected vein image is subjected to image processing such as binarization to obtain a binary black-and-white image as feature data. In some embodiments, the feature data may also be an array extracted from the collected vein image.

[0080] In specific applications, the vein collection device and vein collection and identification method can be used in access control systems or safes and password cabinets for collection, identification and unlocking. After completing the collection of the vein image, it can also include a matching and comparison process of the feature data corresponding to the vein image.

[0081] The vein collection and identification method can control the vein collection device to work in an entry mode or a matching mode.

[0082] When the vein collection device is in the recording mode, the vein collection and identification method may include the following steps:

[0083] Extracting feature data of vein images;

[0084] Encrypting the characteristic data to obtain encrypted characteristic data;

[0085] Store encrypted feature data in the database.

[0086] When the vein collection device is in the matching mode, the vein collection and identification method may include the following steps:

[0087] Extracting feature data of vein images;

[0088] Calling encrypted feature data from the database;

[0089] decrypting the encrypted characteristic data to obtain key characteristic data;

[0090] The feature data is matched with the key feature data and a matching result is output according to the matching degree between the feature data and the key feature data.

[0091] In a specific embodiment, after collecting the vein image and extracting the feature data of the vein image, the feature data can be matched with the feature data in the database and the matching result can be output, so that the feature data is obtained by collecting and identifying the current vein, and the feature data is compared and matched with the feature data stored in the database, and the matching result is output. Therefore, when the matching degree between the feature data of the current vein and the key feature data stored in the database is higher than the preset matching degree, for example, when the matching degree between the feature data of the current vein and the key feature data stored in the database is higher than 70%, 80%, 90% or 95%, the vein collection device determines that the matching result is a successful match and outputs a successful matching result. Devices connected to the vein collection device, such as door locks, safe locks, password cabinet locks, etc., can open the lock according to the successful matching result, thereby completing the intelligent and lightweight control of the door lock. Furthermore, if the feature data is encrypted after the finger vein is collected and then stored in the database, the key feature data needs to be decrypted after the key feature data is retrieved from the database, and then the feature data of the current vein needs to be matched with the decrypted key feature data.

[0092] In summary, the vein collection device 100 and the vein collection and identification method of the embodiment of the present application are provided with a finger rest 20, a second bracket 50 hinged to the finger rest 20, and a first bracket 40 hinged to the second bracket 50, so that when the finger rest 20 slides on the base 10 toward the fixing part 101 of the base 10, the second bracket 50 can be folded toward the first bracket 40, so that when the finger rest 20 slides toward the fixing part 101, the second bracket 50 can stand up, so that the camera 60 arranged on the second bracket 50 can have a certain height and the camera 60 and the infrared light source 30 are arranged opposite to each other across the finger rest 20, so as to facilitate the camera to collect the vein image of the finger placed on the finger rest, and after the camera finishes collecting the vein image, the finger rest can slide back to the original position, and the folding height of the first bracket and the second bracket can be released, so that the thickness of the vein collection device can be reduced, so that the vein collection device is easy to store and occupies less space, which is conducive to the thinning of the product and related application scenarios.

[0093] In the description of the embodiments of the present application, any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code including one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations, in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0094] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processing module, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (control method), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0095] It should be understood that the various parts of the embodiments of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0096] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A vein collection device, characterized in that: include: Base; A finger rest, disposed on the base, and capable of sliding along the base; an infrared light source, disposed on the base, for emitting infrared light toward the plane on which the finger rest slides; A first bracket, wherein a first end of the first bracket is hinged to a fixing member disposed on the base; a second bracket, wherein a first end of the second bracket is hinged to a second end of the first bracket, and the second end of the second bracket is hinged to the finger rest, and when the finger rest slides toward the fixing member, the second bracket can be driven to fold toward the first bracket; A camera is arranged on the second bracket, and when the second bracket is folded toward the first bracket, the camera collects a vein image of a finger placed on the finger rest.

2. The vein collection device according to claim 1, characterized in that: The first end of the first bracket is connected to the fixing member via a first rotating shaft, the first end of the second bracket is connected to the second end of the first bracket via a second rotating shaft, and the second end of the second bracket is connected to the finger rest via a third rotating shaft; the first rotating shaft, the second rotating shaft and the third rotating shaft are arranged in parallel in pairs.

3. The vein collection device according to claim 2, characterized in that: External force applied to the finger rest to slide the finger rest can switch the vein collection device between a flat state and an upright state, wherein when the finger rest is in an initial position, the vein collection device is in the flat state, and the flat state is a state in which the first bracket and the second bracket are close to the base; when the finger rest is between the initial position and the fixing member, the vein collection device is in the upright state, and the upright state is a state in which the second bracket is folded toward the first bracket so that the first bracket and the second bracket are upright relative to the base.

4. The vein collection device according to claim 3, characterized in that: A first spring is arranged on the first rotating shaft, and a second spring is arranged on the second rotating shaft; When the vein collection device is in the flat state, the first spring and the second spring are both in a natural state; When the vein collection device is in the upright state, the first spring and the second spring are both in an energy storage state; When the vein collection device is in the upright state and the first spring and the second spring are in the energy storage state, if the external force disappears, the vein collection device recovers from the upright state to the flat state under the action of the spring force.

5. The vein collection device according to claim 4, characterized in that: A guide rail is arranged on the base, the finger rest is embedded in the guide rail to slide along the guide rail, and the guide rail limits the movement of the finger rest in the thickness direction of the base.

6. The vein collection device according to claim 5, characterized in that: The vein collection device further comprises a limiting device, which is arranged on the base and is used to limit the sliding travel of the finger rest along the guide rail.

7. The vein collection device according to claim 6, characterized in that: The limiting device is a limiting block, which is arranged on the same surface of the base as the first bracket and the second bracket, and the limiting block protrudes from the surface of the base; when the vein collection device is in the flat state, the limiting block conflicts with the first bracket or the second rotating shaft.

8. The vein collection device according to claim 6, characterized in that: The vein collection device also includes: A touch sensor, arranged on the base and between the limiting device and the infrared light source, the touch sensor being used to sense the position of the finger rest; A processor is used for controlling the infrared light source to turn on and the camera to take one or more photos to obtain the vein image when the touch sensor senses that the finger rest is located at a preset position.

9. The vein collection device according to claim 8, characterized in that: The preset position is the position of the finger rest when the finger rest contacts the limiting device and is located above the touch sensor.

10. The vein collection device according to any one of claims 1 to 9, characterized in that: The camera is an infrared camera or a visible light camera provided with an infrared filter.

11. A vein collection and identification method, characterized in that: Applicable to the vein collection device according to any one of claims 1 to 10, the vein collection and identification method comprises: Get the touch sensor status; When the touch sensor is in a sensing state, turning on the infrared light source and controlling the camera to take one or more vein images, wherein the sensing state is triggered when the touch sensor senses that the finger rest is located at a preset position; The feature data of the vein image is extracted to store the feature data in a database or the feature data is matched with the feature data in a database and a matching result is output.

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